Provably fair hash verifier

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Provably fair verifier: paste a revealed server seed, client seed and nonce to recompute the round with HMAC-SHA256 in your browser. Try it.

Added 8 Nov 2026 Analysed 8 Nov 2026 via

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Screenshot of Provably fair hash verifier

What we found

  1. It sends five of the six security headers we check; the missing one is Content-Security-Policy.
  2. Built with Astro, the site is served through Cloudflare, with a domain registered 1 week before launch.

Built with: 10 technologies

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For light pages

Built with Astro
<a href="https://firstsited.com/launch/vxmz8lis/provably-fair-hash-verifier"><img src="https://firstsited.com/badge/vxmz8lis/stack.svg" alt="Provably fair hash verifier tech stack on FirstSited" height="28"></a>

For dark pages

Built with Astro
<a href="https://firstsited.com/launch/vxmz8lis/provably-fair-hash-verifier"><img src="https://firstsited.com/badge/vxmz8lis/stack.svg?theme=dark" alt="Provably fair hash verifier tech stack on FirstSited" height="28"></a>
TechnologyType
Infrastructure
Cloudflare CDN
Cloudflare DNS DNS
HTTP/3 Protocol
HSTS Security
Email
Zoho Mail (2) Business email
Build & Framework
Astro Meta-framework
Analytics & Marketing
Ahrefs (2) Analytics
Microsoft Clarity Analytics
Google Search Console SEO
Business Tools
Zoho SaaS

Each technology links to its own page: which other new sites launched with it.

Site checks

Page basicsHow we check
Custom title and meta description
Open Graph tags (title, image, description)
Twitter card meta tags
Canonical URL declared
Responsive viewport meta tag
Favicon present
Semantic HTML (nav, main, article)
Crawl files
robots.txt
sitemap.xml 25 URLs
security.txt optional
llms.txt optional
ads.txt only for ad-funded sites
humans.txt optional
AI crawlers No stanceHow we check
llms.txt published not published
No AI bots blocked in robots.txt
Content-Signal none declared
Link headers none advertised

Email

StateRecordStatusWhat it does
SPF ~all Soft-fail (~all), common and accepted Lists the servers allowed to send email for the domain.
DMARC p=quarantine Quarantine Tells receivers what to do with email that fails SPF or DKIM.
DKIM Not found at common selectors Signs outgoing email. We check common selectors only, so a provider may use another.
MTA-STS Not deployed Stops email to the domain being downgraded to plain text in transit.
TLS-RPT Not configured Sends the owner reports of failed encrypted deliveries.

Hosting and network

Network CLOUDFLARENET - Cloudflare, Inc., US AS13335, US
DNS Cloudflare DNS authoritative nameservers
DNSSEC Not enabled DNS answers are unsigned
Certificate Google Trust Services valid 30 Oct 2026 to 28 Jan 2027, as captured
Domain age 15 days registered Oct 2026, GoDaddy.com, LLC
Green hosting Yes per The Green Web Foundation
Page build 4 JS files, 0 CSS files 2 third-party domains, code splitting
App manifest Crash Game Guide display standalone; 3 icons
Brand colours

Storage: 1 item

Local storage 1
KeySizeSet by
cgg-ab10 B-

Performance

MeasureThis siteReading
Server response 260 ms good, faster than 50% of sites
Largest contentful paint 396 ms good
Layout shift 0.00 good
Page weight 73 KB light
Image weight 8 KB light
Images 2 all sized and labelled
Third-party domains 2
Console errors 0 none
Failed requests 0 none

From a single automated render of the home page. A quick guide, not a substitute for Lighthouse or field data. How we measure

Notes

  1. Looks AI-built: few AI signals. How much the site looks AI-generated. It is a pattern match shown for interest, not a verdict.
    Which signals fired
    SignalPoints
    Placeholder branding+10
  2. Performance comes from one render on 8 November 2026 and will vary between visits.

How we know

FirstSited records what new websites are built with, usually within a day of going live. Most we find ourselves, by watching public internet infrastructure for brand-new sites; the rest come from Product Hunt, Hacker News and PeerPush. We checked this one in full: its tech stack, DNS, security headers and page basics. This page is what we saw on 8 November 2026; the live site may have changed since.

Every technology below links to its own page: which other new sites launched with it. Watch any of them and get every new site that uses it as it goes live, from £15 a month.

Spot a mistake? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.